feat(p6): kernel-client route methods + @insignia/iios-community-web SDK

Task 6.5: add createBinding/listBindings/simulateRoute/listRouteDecisions/
approveDecision/denyDecision to RestClient + RouteBinding/RouteDecision types.
New @insignia/iios-community-web package (CommunityProvider, useBindings,
useRoutePreview, useRouteDecisions). Boundary allowlist: community-web ->
contracts + kernel-client.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

packages/iios-community-web/tsup.config.ts

@@ -0,0 +1,9 @@
+import { defineConfig } from 'tsup';
+
+export default defineConfig({
+  entry: ['src/index.ts'],
+  format: ['esm'],
+  dts: true,
+  clean: true,
+  external: ['react', 'react-dom', '@insignia/iios-kernel-client'],
+});